Hoshizaki IM-50BAA-Q Service Manual
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Hoshizaki IM-50BAA-Q Service Manual

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Summary of Contents for Hoshizaki IM-50BAA-Q

  • Page 2 WARNING NOTE:...
  • Page 3 IMPORTANT CONTENTS...
  • Page 5 Important Safety Information WARNING Indicates a hazardous situation which could result in death or serious injury. NOTICE Indicates a situation which could result in damage to the appliance or property. IMPORTANT Indicates important information about the installation, use, and care of the appliance. WARNING precautions including the following: •...
  • Page 6 WARNING, continued NOTICE...
  • Page 7 I. Construction and Water/Refrigeration Circuit Diagram A. Construction...
  • Page 8 IM-50BAA-Q...
  • Page 9 IM-50BAA-LM...
  • Page 10 B. Water/Refrigeration Circuit Diagram...
  • Page 11 II. Sequence of Operation and Service Diagnosis A. Sequence of Operation Flow Chart IM-50BAA-Q...
  • Page 12 IM-50BAA-LM...
  • Page 13 B. Sequence of Operation IM-50BAA-Q 1. Startup Cycle 2. Harvest Cycle 3. Freeze Cycle 4. Shutdown...
  • Page 14 IM-50BAA-LM 1. Startup Cycle 2. Harvest Cycle 3. Freeze Cycle 4. Shutdown CB–...
  • Page 15 IM-50BAA-Q...
  • Page 16 IM-50BAA-LM...
  • Page 17 C. Service Diagnosis Table No Ice Production - Possible Cause Low Ice Production - Possible Cause Long Harvest Cycle...
  • Page 18 Long Freeze Cycle Slab Does Not Break Into Separate Cubes - Possible Cause Cubes Drop Separately - Possible Cause Imperfect Ice Production - Possible Cause Large-Hole Cubes - Possible Cause Cloudy Cubes - Possible Cause...
  • Page 19 D. Bin Control Check and Cleaning 1. Bin Control Check IM-50BAA-Q Fig. 1...
  • Page 20 IM-50BAA-LM...
  • Page 21 2. Bin Control Cleaning IM-50BAA-Q WARNING CHOKING HAZARD:...
  • Page 22 IM-50BAA-LM WARNING CHOKING HAZARD:...
  • Page 23 E. Evaporator Thermistor Check...
  • Page 24 III. Controls and Adjustments A. Control Switch B. Control Board NOTICE...
  • Page 25 1. Control Board Layout • CN12 Connector • CN14 Connector • CN13 Connector • 7-Segment Double- • CN11 Connector Digit Display • CN7 Connector • CN3 Connector • RESET Button • CN2 Connector • CN1 Connector • SERVICE 1 Button •...
  • Page 26 C. Control Buttons 1. RESET Button 2. SERVICE 1 and SERVICE 2 Buttons Fig. 2...
  • Page 27 D. Control Board Settings NOTICE...
  • Page 28 Control Board (CB) Setting Menu Default Default Category No. Item Range (50BAA-Q) (50BAA-LM) SETTING CHANGE IS INEFFECTIVE. SETTING CHANGE IS INEFFECTIVE.
  • Page 29 Control Board (CB) Setting Menu Default Default Category No. Item Range (50BAA-Q) (50BAA-LM) SETTING CHANGE IS INEFFECTIVE.
  • Page 30 Control Board (CB) Setting Menu Default Default Category No. Item Range (50BAA-Q) (50BAA-LM) SETTING CHANGE IS INEFFECTIVE. DO NOT ADJUST SETTING CHANGE IS INEFFECTIVE.
  • Page 31 Control Board (CB) Setting Menu Default Default Category No. Item Range (50BAA-Q) (50BAA-LM) DO NOT ADJUST DO NOT ADJUST...
  • Page 32 Control Board (CB) Setting Menu Default Default Category No. Item Range (50BAA-Q) (50BAA-LM) Hard Water 60 Operating Condition 10 to 100% Control Condition to operate cloudy ice control in hard water (00=100) application indicated in percentage against target (1% increments) integrated value.
  • Page 33 Control Board Information Display No. Item Display (example) –...
  • Page 34 F. Control Board Model Code Setting 1. Control Board Replacement WARNING G. Error Codes 1. Error Codes...
  • Page 35 Error Codes Error Item Description Operation Reset...
  • Page 36 2. Service Diagnosis Error Codes Error Check Possible Cause Remedy...
  • Page 37 IV. Refrigeration Circuit and Component Service Information WARNING • • • CHOKING HAZARD: • A. Refrigeration Circuit Service Information WARNING NOTICE 1. Refrigerant Recovery...
  • Page 38 2. Brazing WARNING • • • NOTICE 3. Evacuation and Recharge (R-134a) IMPORTANT...
  • Page 39 B. Component Service Information 1. Cabinet [a] Top Panel, Top Insulation, Top Cover...
  • Page 40 [b] Front Frame, Drain Pan [c] Front Panel (Lower) [d] Rear Panel [e] Door Assembly, Slope, Spring...
  • Page 41 2. Refrigeration Circuit [a] Compressor [b] Condenser...
  • Page 42 [c] Hot Gas Valve...
  • Page 43 [d] Upper Evaporator (IM-50BAA-Q)
  • Page 44 Upper Evaporator Location Adjustment...
  • Page 46 [e] Evaporator (IM-50BAA-LM)
  • Page 47 [f] Fan Motor...
  • Page 48 3. Icemaking Mechanism (IM-50BAA-Q) [a] Actuator Motor Assembly [b] Cam Shaft Assembly...
  • Page 49 [c] Water Plate Switch [d] Cam Switch [e] Water Tank Assembly [f] Lower Evaporator [g] Evaporator Base [h] Pump Motor [i] Water Tank...
  • Page 51 Water Plate Switch and Cam Switch Operation Water Plate Switch Positioning...
  • Page 52 Cam Switch Positioning [j] Ice Guide...
  • Page 53 Ice Guide Rotation Check...
  • Page 54 4. Icemaking Mechanism (IM-50BAA-LM) [a] Actuator Motor Assembly [b] Cam Shaft Assembly [c] Water Tank Assembly [d] Pump Motor [e] Water Tank...
  • Page 56 V. Maintenance WARNING • • • • CHOKING HAZARD: Maintenance Schedule Frequency Area Task...
  • Page 57 VI. Preparing the Appliance for Periods of Non-Use NOTICE 1. Remove the water from the icemaker water supply line:...
  • Page 58 2-inch (5-cm) air gap Floor Drain Fig. 3...
  • Page 59 VII. Disposal IMPORTANT...
  • Page 60 VIII. Technical Information IM-50BAA-Q...
  • Page 61 IM-50BAA-LM...
  • Page 62 B. Performance Data IM-50BAA-Q...
  • Page 63 IM-50BAA-LM...
  • Page 64 C. Wiring Diagram IM-50BAA-Q...
  • Page 65 IM-50BAA-LM...

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